British actor Jon Fletcher (The Good Wife) is set to co-star in CW drama pilot The Messengers from feature producer Basil Iwanyk (the Clash Of The Titans franchise) and CBS TV Studios. Stephen Williams (Lost) has been tapped to direct. The Messengers starts with a mysterious object crashing down to Earth. A group of seemingly unconnected strangers die from the energy pulse, but then awaken to learn that they have been deemed responsible for preventing the impending apocalypse. Fletcher, repped by Resolution and One Entertainment, will play Joshua, a charismatic and compelling pastor at a Texas mega-church. Williams is with UTA and Oasis Media Group.

Alexandra Peters (Sage Paints The Sky) is set as a series regular in the NBC drama pilot Coercion, from Universal Television and Keshet Media Group. Based on the Israeli format The Gordin Cell, the high-octane thriller revolves around the O’Connor family and their son, Alex, a decorated American war hero and CIA analyst. Unbeknownst to him, both of his parents and his sister are part of a dormant Russian sleeper cell that has just been reactivated. Peters will play Sarah, Alex’s younger teenage sister who idolizes her older brother. She’s with Paradigm and Marnie Cooper Management.

In a recasting, Mason Cook (The Lone Ranger) has signed on as a series regular to TNT’s drama Legends, executive produced by Homeland‘s Howard Gordon. Based on the novel by Robert Littell, Legends centers on Martin Odum (Sean Bean), a deep-cover operative who has an uncanny ability to transform himself into a different person for each job. Cook, repped by Coast to Coast, Evolution, and attorney Howard Fishman, will play Aiden Odum, Martin’s son. Cook played Eddie Munster in NBC’s Munsters reboot Mockingbird Lane. He also appeared in ABC’s Spy and features The Incredible Burt Wonderstone and Spy Kids: All The Time In The World.